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jepp2 · December 21, 2011, 05:30 PM

If the red dust is just from the rust on the can and the powder still has the solvent smell I feel it is Ok to use.

I have some IMR 4895 from the mid 60's that is just fine. I also have a can of IMR 4350 from the early 90's like yours. The interior of the can has rusted some (not at all unusual for metal can storage) and as a result there is a light reddish dust on the powder. The powder still has the normal solvent smell. It is fine to use.

Keep in mind that as powder deteriorates is loses strength, not gains strength. So the largest downside is reduced performance. But do whatever you feel most comfortable with.

December 21, 2011, 05:30 PM	#11
jepp2 Senior Member Join Date: December 24, 2008 Location: Loveland, CO Posts: 1,476	If the red dust is just from the rust on the can and the powder still has the solvent smell I feel it is Ok to use. I have some IMR 4895 from the mid 60's that is just fine. I also have a can of IMR 4350 from the early 90's like yours. The interior of the can has rusted some (not at all unusual for metal can storage) and as a result there is a light reddish dust on the powder. The powder still has the normal solvent smell. It is fine to use. Keep in mind that as powder deteriorates is loses strength, not gains strength. So the largest downside is reduced performance. But do whatever you feel most comfortable with.